book

Parallel R

by Q. Ethan McCallum, Stephen Weston

October 2011

Intermediate to advanced

126 pages

3h 10m

English

O'Reilly Media, Inc.

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Conventions Used in This BookUsing Code ExamplesSafari® Books OnlineHow to Contact UsAcknowledgmentsQ. Ethan McCallumStephen Weston
Why R?Why Not R?The Solution: Parallel ExecutionA Road Map for This BookWhat We’ll CoverLooking Forward…What We’ll Assume You Already KnowIn a Hurry?snowmulticoreparallelR+HadoopRHIPESegueSummary
Quick LookHow It WorksSetting UpWorking with ItCreating Clusters with makeClusterParallel K-MeansInitializing WorkersLoad Balancing with clusterApplyLBTask Chunking with parLapplyVectorizing with clusterSplitLoad Balancing ReduxFunctions and EnvironmentsRandom Number Generationsnow ConfigurationInstalling RmpiExecuting snow Programs on a Cluster with RmpiExecuting snow Programs with a Batch Queueing SystemTroubleshooting snow ProgramsWhen It Works……And When It Doesn’tThe Wrap-up
Quick LookHow It WorksSetting UpWorking with ItThe mclapply FunctionThe mc.cores OptionThe mc.set.seed OptionLoad Balancing with mclapplyThe pvec FunctionThe parallel and collect FunctionsUsing collect OptionsParallel Random Number GenerationThe Low-Level APIWhen It Works……And When It Doesn’tThe Wrap-up
Quick LookHow It WorksSetting UpWorking with ItGetting StartedCreating Clusters with makeClusterParallel Random Number GenerationSummary of DifferencesWhen It Works……And When It Doesn’tThe Wrap-up
Hadoop at Cruising AltitudeA MapReduce PrimerThinking in MapReduce: Some Pseudocode ExamplesCalculate Average Call Length for Each DateNumber of Calls by Each User, on Each DateRun a Special Algorithm on Each RecordBinary and Whole-File Data: SequenceFilesNo Cluster? No Problem! Look to the Clouds…The Wrap-up
Quick LookHow It WorksSetting UpWorking with ItSimple Hadoop Streaming (All Text)Streaming, Redux: Indirectly Working with Binary DataThe Java API: Binary Input and OutputProcessing Related Groups (the Full Map and Reduce Phases)When It Works……And When It Doesn’tThe Wrap-up

Quick LookHow It WorksSetting UpWorking with ItPhone Call Records, ReduxTweet BrevityMore Complex Tweet AnalysisWhen It Works……And When It Doesn’tThe Wrap-up
Quick LookHow It WorksSetting UpWorking with ItModel Testing: Parameter SweepWhen It Works……And When It Doesn’tThe Wrap-up
doRedisRevoScale R and RevoConnectR (RHadoop)cloudNumbers.com